Home > Sealing > Industrial O-Ring, Buna-N

Industrial O-Ring, Buna-N, 304 SS, 1.866" OD

Expert Overview

This industrial O-ring, constructed from robust Buna-N and featuring a 304 stainless steel housing, offers superior sealing performance. Engineered for resilience in challenging environments.

StandardDIN 933
Material304 Stainless Steel
FinishPlain
GradeN/A
Inside Diameter4.829"
Outside Diameter1.866"
Cross Section0.143"

Detailed Engineering Specifications

Purpose-built for heavy-duty applications, this O-ring boasts a precise 4.829" inside diameter, a 1.866" outside diameter, and a 0.143" cross-section. The Buna-N elastomer provides excellent resistance to oils, fuels, and many solvents, while the 304 stainless steel housing ensures high corrosion resistance and mechanical strength. This combination makes it ideal for dynamic and static seal applications in demanding industrial settings, including hydraulic systems, pneumatic equipment, and chemical processing machinery where chemical compatibility and robust sealing are paramount.

🧊 Download 3D CAD Model (.STEP)

Verified Global OEM Partners

This component strictly adheres to the tolerances, material specifications, and quality benchmarks set by the world's leading industrial manufacturers.

TrelleborgEst. 1905
Sweden🇸🇪
"Engineered polymer solutions."
Market Rank
🏆 #1 Engineered Polymers
Industry Approvals
🚀 Aerospace & Subsea Approved
Warranty & Support
🛡️ High-Performance Guarantee
Green Manufacturing
🌱 Blue Dimension ESG
Certified:ISO 9001, ISO 14001
GarlockEst. 1887
USA🇺🇸
"High-performance fluid sealing."
Market Rank
🏆 Premium Fluid Sealing Leader
Industry Approvals
🚀 Nuclear & Pharma Approved
Warranty & Support
🛡️ Zero-Leak Guarantee
Green Manufacturing
🌱 Sustainable Materials
Certified:ISO 9001, FDA, NSF
FreudenbergEst. 1849
Germany🇩🇪
"Global sealing technologies."
Market Rank
🏆 Top Global Sealing Tech
Industry Approvals
🚀 Audi & Mercedes OEM
Warranty & Support
🛡️ Global Engineering Support
Green Manufacturing
🌱 Climate Neutral 2045
Certified:IATF 16949, ISO 14001

Certifications & Compliance

RoHS Compliant:Yes
REACH Compliant:Yes
Material Traceability:Available on Request
DFARS Compliant:Yes

Installation Procedure

1. Ensure sealing surfaces are clean and free from debris. 2. Lubricate the O-ring with a compatible lubricant if recommended for the specific application. 3. Carefully insert the O-ring into its designated groove, ensuring it is seated evenly without twisting.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardDIN 933

Mechanical Properties

Tensile Strength75,000 psi (515 MPa)
Yield Strength30,000 psi (205 MPa)
Elongation in 2 in.40% min
HardnessRockwell B95 max

Chemical Composition

Carbon (C)0.08% max
Chromium (Cr)18.0 - 20.0%
Nickel (Ni)8.0 - 10.5%
Manganese (Mn)2.00% max

Temperature & Environment Rating

Min Operating Temp
-320°F (-195°C)
Max Continuous Temp
1400°F (760°C)
Thermal Expansion
Typical for Material Class

Weight Reference Table

Size / TypeEst. Weight (lbs/100)Shipping Weight (kg)
StandardVaries by dimensionContact Sales

Corrosion Resistance Guide

EnvironmentRating
Indoor / DryExcellent
Outdoor / ExposedExcellent
Marine / SaltwaterGood
Chemical / AcidicNot Recommended

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Using a lubricant incompatible with Buna-N.Always verify lubricant compatibility with Buna-N to prevent premature degradation.
Over-stretching or twisting the O-ring during installation.Gently stretch and seat the O-ring, avoiding excessive force or rotation to prevent damage and ensure a proper seal.

Common Applications

  • Hydraulic Systems
  • Pneumatic Equipment
  • Chemical Processing

⚠️ Engineering Warnings

  • Not suitable for applications involving strong oxidizing acids or ketones.
  • Ensure operating temperature remains within the recommended range for Buna-N to maintain sealing integrity.

Alternative Products to Consider

Premium Sealing equivalentHigher corrosion resistance (316 SS)
Economy Sealing optionLower cost for non-critical indoor applications

Frequently Asked Questions

Q: What is the Industrial O-Ring, Buna-N made from?

A: This Industrial O-Ring, Buna-N is manufactured from 304 Stainless Steel.

Q: What are the main applications?

A: Hydraulic Systems, Pneumatic Equipment, Chemical Processing.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 4.829"CS = 0.143"SPECIFICATIONSSize: -214

Torque Specifications

⚡ UNIT CONVERTER

Conversion factor: 1 ft-lb ≈ 1.356 Nm

Verified Compatibility

StatusMating ComponentStandardTorque SpecEngineering Notes
No verified compatibility data found for this component.